Finding the Fourth Proportional to 132,786.39, 199,178.91 and 76,590.09
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Solution
The fourth proportional to 132,786.39, 199,178.91 and 76,590.09 is: 114,884.75
Step by Step Solution
- Step 1: Write the proportion equation
132,786.39 : 199,178.91 = 76,590.09 : x - Step 2: Convert to fraction form
132,786.39/199,178.91 = 76,590.09/x - Step 3: Cross multiply
132,786.39x = 199,178.91 × 76,590.09 - Step 4: Simplify right side
132,786.39x = 15,255,130,643.00 - Step 5: Solve for x
x = 15,255,130,643.00/132,786.39 - Step 6: Final answer
x = 114,884.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.